Try out Vanilla wow, it is free to play and works really well!
https://elysium-project.org/about
The Elysium Project (formerly Valkyrie Project) has been alive for 7 years now. The team is comprised of dozens of individuals that span from all walks of life, from all over the globe. We all share a single bond that unites us; a love for vanilla World of Warcraft. Inspiration comes in many forms. Ours is what we feel to be the pinnacle of MMO gaming. Together we strive to bring the past to life, and to share it with the world. All while doing so for free, without payment, and for nothing in return other than seeing this game world reborn. We do not claim to own the rights to World of Warcraft in any capacity. We simply want to see it thrive once more. If you are interested in contacting us in any way, we ask that you use the forums to reach us.